Water-in-salt electrolytes for aqueous lithium-ion batteries with liquidus temperatures below -10 °C.

Chem Commun (Camb)

Empa, Swiss Federal Laboratories for Materials Science and Technology, 8600 Dübendorf, Switzerland.

Published: October 2019

Crystallization near room temperature is a common challenge for water-in-salt electrolytes. We demonstrate that water-in-salt electrolytes based on lithium (pentafluoroethanesulfonyl)(trifluoromethanesulfonyl)imide remain thermodynamically in the liquid state down to at least -10 °C. Combined with their excellent chemical and electrochemical stability as well as high lithium-ion conductivity, these electrolytes represent a key enabler for the next generation of high-voltage aqueous lithium-ion batteries.

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Source
http://dx.doi.org/10.1039/c9cc04495gDOI Listing

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